In the human body, what part is made of neither bones

The instrument which uses sound waves to measure the depth of oceans is –

Heat stored in water vapour is –

How much calorie of energy is released by a boiled egg?

The instrument for measuring intensity of earthquakes is called –

Pulsars are :

What is the minimum distance required for an obstacle to produce a distinct echo?

Velocity of the sound is minimum in-

What is the audible frequency range?

Which of the following is equal to a measurement of 1 mA?

Among the following materials, which is not an insulator?